GB/T 6730.38-2017(\u82f1\u6587\u7248)
铁矿石 钴含量的测定 亚硝基-R盐分光光度法
GB/T 2441.9-2010
Determination of urea - Part 9: Methylenediurea content - Spectrophotometric method
HG/T 5396\uff5e5399-2018
GB/T 29669-2013
Determination of 10 volatile nitrosamines including N-Nitrosodimethylamine in cosmetics - Gas chromatography tandem mass spectrometry
GB/T 2441.9-2001
Determination of Urea—Determination of methylenediurea content—Spectrophotometric method
KS M 6628-2016(2021)
Blowing agent for rubber, dinitrosopenta methylene tetramine
ISO 25705:2016
Fertilizers — Determination of urea condensates using high-performance liquid chromatography (HPLC) — Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)
ISO 6181:2023
Fertilizers and soil conditioners — Liquid methylene-urea slow release fertilizers — General requirements
DIN EN ISO 25705-DRAFT
Draft Document - Fertilizers - Determination of urea condensates using high-performance liquid chromatography (HPLC) - Isobutylidenediurea and crotonylidenediurea (method A) and methylene-urea oligomers (method B) (ISO 25705:2016); German and English version prEN ISO 25705:2019
EN 15705:2010
CEN/TS 17403:2021
DIN CEN/TS 17403
Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with a pH of 7.5 at 100 ¿C; German version CEN/TS
BS PD CEN/TS 17403:2021
Fertilizers. Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with a pH of 7,5 at 100 °C
BS 09/30205567 DC
BS EN 15705. Fertilizers. Determination of urea condensates using high performance liquid chromatography (HPLC). Isobutylidenediurea and crotonylidenediurea (method A) and methylene-urea oligomers (method B)
32008H0098